I. Introduction
Financial management is an important issue in a wide variety of research literature. Traditionally, people tend to save their money in the bank, but the inflation rate is higher than typical interest rates in modern society, if one chooses to save as the only way to manage wealth, then a small part of the money will be lost to inflation year by year. In January 2021, the Federal Reserve (Fed) of the U.S. announced that it would keep employing quantitative easing to accelerate the pace of recovery. Because of the extreme low-interest rate and government policies, investment has become an important issue in a situation like this.